Process of making axle-skeins



(No Model.)

R. GRAOEY.

PROCESS OF MAKING AXLE SKEINS.

No.328,481. v PatentedOoLZO, 1885.

WITNESSES IJVVEJVTOR STATES ROBERT GRAOEY, OF PITTSBURG, PENNSYLVANIA.

PROCESS OF MAKING AXLE-SKEINS.

SPECIFICATION forming part of Letters Patent No. 328,481, dated October 20, 1885.

Application filed March 19, 1885.

T0 (LZZ whom, itmay concern:

Be it known that I, ROBERT GRACEY, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Pro cess of Making Axle -Skeins, of which the following is a full, clear, and exact description, reference being had to the accompany ing drawings, forming part of this specification, in which Figure l is a blank of metal tubing as used in my process for forming my improved axleskein. Fig. 2 represents a perspective View of my improved axleskein.

The object of my invention is to provide a cheap and substantial thimble or skein for axles; and my invention consists in swaging a skein from ablank of tubular material whose inside diameter is about equal to the largest exterior diameter of the axle.

In the accompanying drawings, A represents a piece of tubular material of a desired length, and whose inside diameter is about equal to the largest exterior diameter of the axle it is to protect. This piece A is the blank from which my improved skein is formed, as I will now explain.

The blank is heated and one end inserted between apair of dies of suitable construction, and whose inside diameter at its larger end corresponds very nearly to the outside diameter of the blank. One of the dies is caused to alternately approach and recede from the blank, thereby giving the said blank a series of quick pressures which reduce its diameter, at the same time elongating the skein. At

short intervals the inserted end of the blank is fed farther into the dies and turned on its axial center, and these operations repeated until the desired size and length have been Serial No. 159,466. (No model.)

obtained. The large end of the blank may now have a portion of it cut away at an angle to the main portion, and the projecting portion (0 thereby formed may be hammered or otherwise manipulated to form the lip by means of which the skein may be secured to the axle. In hammering the enlarged end of the blank A, a shoulder, 12, is formed, against which a shoulder on the axle abuts, and which furnishes a seat for a washer, B, which is shrunk upon the main portion of the skein. A perforation, d, is also made in the reduced or smaller end of the skein, through which the ordinary linchpin is inserted to assist in securing the skein upon the axle.

I am thus enabled to produce an axle-skein from ordinary iron pipe at a greatly reduced cost, and one that is superior for many reasons to the sheet-metal or cast-iron thimbles now in common use.

Having thus described my invention, what I claim as new, and desire to secure bv Letters Patent, is-

The process herein described for forming axle-skeins, the same consisting, essentially, in placing a blank of tubular material whose inside diameter is about equal to the outside diameter of the axle between suitable dies, then swaging this blank, thereby elongating and reducing its diameter, then hammering its enlarged end to form a lip for securing it to the axle, and finally in shrinking a Washer and forming a perforation for the linchpin upon its reduced end, substantially as and for the purpose set forth.

ROBERT GRACEY.

\Vitnesses:

WV. L. GRAOEY, CHARLES B. GRAOEY. 

